Welder&#39;s hood



. June 4- r R. M. RICKERT I 5 WELDERS noon Fil ed Oct. 9, 1942 2Sheets-Sheet 1 H I i I J 3 INVENTOR.

.EOYM. .E/C/(EE? I 26 ATTORNEY.

June R. M. RICKERT' 2, 52,007

WELDER s HOOD Filed oc t. 9, 1942 2 Sheets-Sh'eet 2 INVENTOR. .190) M.Baa-:27;

ATTORNEY.

Patented June 20, 1944 FF' E WFLDERS noon Roy M. Rickert, Oakland,Calif. Application October 9,1942, Serial No. 461,397 1 Claim. '('o1. 2-'s This invention relates to welders hoods. I It is the principalobject of my present inven-- tion to provide an improved hood" forwelders in which the window closure over'the sight open-' ing thereinmay be moved from position by the welder hands. e

In practicing my invention I provide a welders hood formed with a sightopening inline with the wearers eyes. At the exterior of this opening isawindow closure hinged'to the hood so that it maybe moved between openedand closed positions. Interiorly of the hood is positioned an operatingmember engaging the lower jaw of the wearer, so that the latter mayoperate. the member by movement of the lower jaw. A. connectingmechanism connects the operating member with the closure in such amanner that successive operations of the operating member alternatelypositions the closure in opened and closed positions.

One form which the inventiOn may assume is exemplified in the followingdescription, and illustrated by way of example in the accompanyingdrawings:

Fig. 1 is a front elevation of a welders hood embodying the preferredform of my invention.

Fig. 2 is a rear elevation thereof.

Fig. 3 is a central vertical section through the hood taken on line 33of Fig. 1.

Fig. 4 is a fragmentary plan section through the hood taken on line 4+4of Fig. 2.

Figs. 5 and 6 are fragmentary views in side elevation showing theoperating mechanism of the closure.

Fig. 7 is a fragmentary view in perspective showing certain details ofconstruction.

Referring more particularly to the accompanying drawings, I indicates awelders hood which may be of any conventional design. This hood isprovided with a sight opening or window II fitting which is a closuremember I2. The closure member I2 is positioned exteriorly of the openingII and overlies it'in a position abutting the window frame I4 about theperimeter of sight opening II. The closure member I2 is hinged to theframe I4 along its upper edge on a horizontal axis sothat the closure I2may swing between opened and closed positions as illustrated in Figs.and 6.

At one end of the closure I2 and at one side of the hood III, the formeris fitted with a fixed yoke I5 extending co-axially of the pivot orhinge axis of the closure I2. The ends I6 and. I! of the yoke closedtoopened withoutthe use of his lation of the bar tances from the pivotaxis of the closure I2 as shown in Figs. 5, 6, and '7.

Projecting through the yoke l5 isthe cam end I8 of a verticallyreciprocal member I9 which. is slightly flexible ina planetransversely'of the yoke or radially with respect to the pivot axis ofthe, closure. The cam It has inclined cam, surfaces 23 and El whichconverge as illustrated. The sides of the cam I8 project beyond thesides of the member -I9 and'form' lateral shoulders 22 and 23 theundersides of which'alternately engage the yoke ends I6 and I! as willbe'described.

The vertically reciprocable member I9' is guided for verticalreciprocation in guide 24 and in a slot 25 formed in the side of thehood Ill. The lower end of the member I9 projects through this slot intothe hood and is pivotally connected at its lower extremity therein toone end of an oscillatory operating bar 26. This bar 26 is hinged at itsopposite end to the hood ID as at 21 so that the bar may oscillate inthe plane of movement in the member IQ. Obviously oscil- 26 will betranslated into reciprocation of the member I9. 7

The operating bar 26 has a chin socket 28 to engage the point of thelower jaw of the wearer I of the hood. By movement of the-jaw, the

I5 are disposed equal radial diswearer may oscillate the bar andreciprocate the member I9. A spring 29 yieldingly maintains the memberI9 in its uppermost position. 7

A spring 39 is connected to the hood I0 and to one end of the yoke I5and is so disposed with" relation to the center of the yoke I5 as toexert its tension in a manner to yieldingly maintain the latter ineither of two positions. That is, in the positions where the closure I2is in opened position and in closed position.

In operation of the device assuming that the closure I2 is in closedposition as illustrated in Fig. 5, and the wearer desires to open it,the wearer moves his lower jaw downwardly depressing the operating bar26 which pulls down the member I9. As it travels downwardly the lateralshoulder 22 on the cam I8 engages the end I 5 of the yoke I5 and swingsthe latter about its pivot pointmoviug the closure I2 to opened positionas illustrated in Fig. 6. During this movement the shoulder 23 clearsthe end I! of the yoke I5 so that no engagement therebetween results.

When the wearer raises his jaw, the spring 29 elevates the bar 26 andtion it for a subsequent operation. A stop memher 3: (Fig. 3) limits theupward movement of the member I9 to p0si-' the member [9 and the bar 26.The cam faces 20 and 2| and the flexibility of the member I9 in theplane of the cam l8 enables the cam I8 to pass back upwardly through theyoke [5. Obviously from Fig. 6, when the cam l8 moves upwardly and itsinclined surface 2| engages the end of the yoke, the cam face 2| willcause the member l9 to flex and thus enable the cam l8 to pass throughthe yoke. On alternate operations of the member IS, the cam face 2!!similarly cooperates with the opposite end of the yoke. The parts uponopening the window will be in the position shown in Fig. 6 so that uponthe next downward movement of the member IS, the shoulder 23 will engagethe yoke end l1 the closure I! in closed position.

15 and swing the yoke I5 in the direction placing It is obvious that themoment that the yoke 1 moves sufiiciently so that the spring 30 is overcenter, a snap opening or closing of the closure ;I2 will result. Thussuccessiveoperations of the operating bar 26 and the reciprocable member19 will alternately result in opening and closing of the closure l2.

It is obvious that the wearer need not use his hands at all in theoperation, which isquite important in that it enables him to maintainboth hands on the work or instruments with which ,he is engaged.

While I have shown the preferred form of my invention, it is to beunderstood that Various changes may be made therein by those skilled inthe art without departing from the spirit of the invention as defined inthe appended claim.

Having thus described my invention, what I claim and desire to secure byLetters Patent is: A welders hood having a sight opening in the frontwall thereof, a transparent closure for said opening, a hinge connectionbetween the upper horizontal edge of said closure and the upperhorizontal boundary of said opening whereby the: closure will swingabout a horizontal axis, a yoke rigidly fixed to one side of saidclosure and projecting laterally therefrom, said yoke having anelongated slot therein arranged transversely of the pivotal axis of theclosure and extending equal distances on opposite sides of said axis, avertically reciprocable member at the exterior side of the yoke,-a camend at the upper end of said member projecting through the slot in saidyoke and operative on successive downward strokes of said member toalternately engage opposite ends of the yoke and swing the closure inopposite directions between closed and opened positions, a memberpositioned interiorly of the hood and hinged at one end to the sidethereof opposite said vertically reciprocable member and connected atits opposite end. through the hood to the lower end of said verticallyreciprocable member, the intermediate portion of said interiorlypositioned member being engageable by the chin of the wearerof the hoodwhereby it may be depressed to move said verticallyv reciprocable memberdownwardly, and spring means constantly tending to move said verticallyreciprocable member to its uppermost position.

ROY M. RICKERT.

